iOS实现带遮罩的弹出选项卡
在我们日常开发的过程中难免会碰到一些选项的需求,下面是我针对我们该次需求做的一个小的Demo,闲话不多说了,上图片,上代码。
这样在我们选择上面一个Cell进行点击的时候,我会通过一个代理把数据传递到下面的页面,下面是代码
// // LCAlertListView.h // MeiMeiDu // // Created by 韩伟佳 on 16/4/6. // Copyright © 2016年 LangCuang. All rights reserved. // #import <UIKit/UIKit.h> @class LCAlertListView; @protocol LCAlertListViewDelegate <NSObject> -(void)alertListView:(LCAlertListView*)view didSelectedRow:(NSInteger)row; @end @interface LCAlertListView : UIView<UITableViewDataSource, UITableViewDelegate> -(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas; -(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas count:(NSArray*)counts; @property(nonatomic, strong) id<LCAlertListViewDelegate> delegate; @end
下面是具体实现
// // LCAlertListView.m // MeiMeiDu // // Created by 韩伟佳 on 16/4/6. // Copyright © 2016年 LangCuang. All rights reserved. // #import "LCAlertListView.h" #import "NoFreeCell.h" static CGFloat TableViewHeight ; @implementation LCAlertListView{ UITableView* mTableView; NSArray* tableData; NSArray* visiableData; NSArray* visiableCount; UIButton* backgroundBtn; } -(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas{ if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor clearColor]; backgroundBtn = [[UIButton alloc] initWithFrame:frame]; backgroundBtn.backgroundColor = RGBA(88, 88, 88, 0.8); [backgroundBtn addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside]; [self addSubview:backgroundBtn]; tableData = datas; TableViewHeight = (datas.count + 1) * 44 + 20; mTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight) style:UITableViewStylePlain]; [mTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"]; mTableView.delegate = self; mTableView.dataSource = self; [self addSubview:mTableView]; [UIView animateWithDuration:.25 animations:^{ [mTableView setFrame:CGRectMake(0, kScreenHeight - TableViewHeight, kScreenWidth, TableViewHeight)]; } completion:^(BOOL finished) { }]; } return self; } -(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas count:(NSArray*)counts{ if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor clearColor]; backgroundBtn = [[UIButton alloc] initWithFrame:frame]; backgroundBtn.backgroundColor = RGBA(88, 88, 88, 0.8); [backgroundBtn addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside]; [self addSubview:backgroundBtn]; visiableData = datas; visiableCount = counts; TableViewHeight = (datas.count + 1) * 44 + 20; mTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight) style:UITableViewStylePlain]; [mTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"]; mTableView.delegate = self; mTableView.dataSource = self; [self addSubview:mTableView]; [UIView animateWithDuration:.25 animations:^{ [mTableView setFrame:CGRectMake(0, kScreenHeight - TableViewHeight, kScreenWidth, TableViewHeight)]; } completion:^(BOOL finished) { }]; } return self; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ if(tableData.count > 0){ return [tableData count]; }else if (visiableCount.count > 0){ return [visiableCount count]; } return nil; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewCell* cell; NoFreeCell *doubleCell; if([tableData count] <= 3 && [tableData count] > 0){ cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath]; cell.textLabel.text = tableData[indexPath.row]; return cell; }else { static NSString *identifier = @"cell0"; doubleCell =[tableView dequeueReusableCellWithIdentifier:identifier]; if (doubleCell == nil){ doubleCell= [[NoFreeCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier]; doubleCell.visibleRoleLabel.text = visiableData[indexPath.row]; doubleCell.showVisibleRoleLabel.text = visiableCount[indexPath.row]; } return doubleCell; } } -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ NSInteger row = indexPath.row; [self dismiss:row]; } -(void)dismiss:(NSInteger) row{ if (_delegate && [_delegate respondsToSelector:@selector(alertListView:didSelectedRow:)]) { [_delegate alertListView:self didSelectedRow:row]; } [UIView animateWithDuration:.15 animations:^{ [mTableView setFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight)]; } completion:^(BOOL finished) { [self removeFromSuperview]; }]; } -(void)dismiss{ [UIView animateWithDuration:.15 animations:^{ [mTableView setFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight)]; } completion:^(BOOL finished) { [self removeFromSuperview]; }]; } @end
上面的NoFree 文件只是一个自定义的Cell,我们可以根据自己的需求自己设计,就不上传了,最后我们说说用法:
LCAlertListView* alertListView = [[LCAlertListView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight) datas:visibleRoleArray count:visibleRoleCountArray]; alertListView.delegate = self; [[[self.view superview] superview] addSubview:alertListView];
下面是代理传值的使用
#pragma mark - LCAlertListViewDelegate -(void)alertListView:(LCAlertListView *)view didSelectedRow:(NSInteger)row{ if(didSelectedIndex == 0){ testVisibleRole = visibleRoleArray[row]; }else{ testData = datas[row]; } NSIndexPath *indexPath = [NSIndexPath indexPathForRow:didSelectedIndex inSection:0]; [_myTableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade]; }
这样,我们的AlertTableVIew 就做好了。
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